Ejects every mounted volume.
When I became mobile, completely mobile, I bought a thunderbolt hub for my Macbook Air and connected 3 external hard drives to it. Now, every evening I had to eject about 7 volumes by hand, which was annoying. Couldn't find an app for this simple task (although I could use an applescript) and I wanted it to be in the status bar. Now I have it, and I'm sharing it with you.